Description
The glass frogs of the family Centrolenidae are found along the rivers and streams of Central and South American rainforest, their ventral (belly) skin being transparent to the degree that the internal organs are visible to the naked eye in backlit conditions. This macro portrait was made in the cloud forest of the Mindo Valley in Ecuador using a 100mm macro lens at f/8 and a ring flash positioned below the leaf — the backlit transparency effect requires the light source to be beneath the frog’s resting surface rather than above. The frog is resting in its characteristic underside-of-leaf position with the ventral skin in contact with the leaf; the combination of ring flash transmission through the leaf and frog body reveals the orange-red heart pulsing at the body’s centre and the coiled dark intestines behind it. The external view — vivid green skin, orange toe pads, silver-rimmed eyes — frames the transparent interior.
